No Wings just has one viewport, I felt this was a disadvantage at first but it really isn't. Using shortcut keys you can move from one view to another in an instant without losing your selection and of course your model is that much bigger on your screen! As for reference images, you can't add them to the background but you can add them to image planes and use them as backgrounds that way or place them in the centre of your model. Not exactly cutting edge but it works just as well so long as you lock the image object so that you don't accidently modify it! Baz